QMV Super Solutions chief executive Brad Goodall has resigned after filling the role since 2012.
Goodall leaves the company to take up a new position in the United Kingdom.
He will work closely with the leadership team and directors to search for a replacement before departing at the end of March.
QMV executive director Michael Quinn praised Goodall's contribution to the role.
"Brad's leadership has seen QMV grow from a boutique consultancy to a company with more than 50 staff in just over three years," he said.
Goodall joined QMV as general manager in 2010 and was promoted to CEO after the company saw strong financial growth. He has overseen annual revenue growth of 75 per cent year-on-year.
"Although I am certainly sad to be departing, I leave behind an extraordinary leadership team who I have no doubt will build on the solid platform we have developed," Goodall said.
"The opportunity to use what I have learned at QMV to take on a new challenge in the United Kingdom was just too good to pass up."
Quinn will be the acting CEO until a suitable replacement can be found.
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